At the risk of "flogging a dead horse" there is a slightly different technique for starting an inverted diesel.

The pics below show a Vintage A Team Racers (2.5cc engine with 15cc of fuel). The tank overflow is a tyre valve operated by one hand while the other aligns and squezzes the filler bottle. When the tank is full a prime is forced into the engine (via the fuel tubing) by closing the tyre valve but continuing to fill. Usually you turn the engine over twice and give one hard flick and it starts.

The other pic shows a glow engine in a team racer, with a screen over the venturi. The tank is filled via the same system, but the "overfill" prime is collected as well in the mesh. This give a vapour available to encourage starting. The same idea is used with diesels.

Ray